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March 26, 2017

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need help with math 117 week 4 checkpoint

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    If you post one or two of the questions and your answers, we'll be glad to check them for you.

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    1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C=6,000/200-2x
    a. What is the cost to remove 75% of the pollutant?
    Answer: $120 million dollars
    b. What is the cost to remove 90% of the pollutant?
    Answer: $300 millions dollars
    c. What is the cost to remove 99% of the pollutant?
    Answer: $3 million dollars
    d. For what value is this equation undefined?

    e. Do the answers to sections a. through d. match your expectations? Explain why or why not.

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